Surveying and Geomatics

Transportation Infrastructure

Monroe Street Bridge

Location: Spokane, Washington

The historic Monroe Street Bridge was built in 1911. The 896-foot-long bridge spans the Spokane River in downtown Spokane and connects the north and south sides of the city. Before its closure for construction, it carried more than 25,000 vehicles per day.

DEA was retained in 2000 to manage and design the $18 million rehabilitation project. Prior to final design, DEA completed a technical and economic feasibility study of restoring, rehabilitating, or modifying the existing bridge, a multi-span, cast-in-place concrete, open-spandrel-deck arch structure.

The new superstructure was designed to allow future widening of the bridge from four lanes to six and will extend the life of the bridge by 75 years.